Make sure you have installed the Quixel Bridge plugin for unreal, and make sure you have unreal up and running when you try to export it to Unreal.
I did and still can’t get any help for this. All file paths are proper. Unreal Engine is open when exporting. It never detects unreal engine 4.26.2 on either PC I’ve tried from, every which way possible. I too would love to know why this won’t work…it’s quite frustrating to say the least.
Do you see the Megascans-symbol at the top of your editor?
And how does your export settings look like in Bridge?
And what does your log say? it says “Please check log for details” in your image.
If both looks correct, then you should contact quixel support, since they are the ones maintaining Quixel Bridge and the plugin 